Loosened tensioner too much and broke it. | FerrariChat
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Loosened tensioner too much and broke it.

Discussion in '348/355' started by Eric C, Aug 8, 2015.

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  1. Eric C

    Eric C F1 World Champ
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    #1 Eric C, Aug 8, 2015
    Last edited by a moderator: Sep 7, 2017
    No idea how this happened. A simple alternator repair turned into a broken tensioner housing. Following a post on here, it said to turn the bolt counter clockwise. Well, I turned it about 5 turns and it blew its guts out.

    How difficult are these to swap out?
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  2. johnk...

    johnk... F1 World Champ
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    #2 johnk..., Aug 8, 2015
    Did you loosen the locking nut first?
     
  3. Eric C

    Eric C F1 World Champ
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    #3 Eric C, Aug 8, 2015
    I loosened the nut on the pulley. Is that what you mean?

    The pulley never moved.
     
  4. johnk...

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    #4 johnk..., Aug 8, 2015
    Last edited: Aug 8, 2015
    Yep. What I meant. Can't diagnose from a distance but my guess would be that some how the tensioner mechanism was frozen up, not allowing the idler to move. Take it all off. Get it welded or replace.

    WOW! Ricambi wants $400 for a new one. Euro spares has a used one for $115.
     
  5. driveitdaily

    driveitdaily Formula 3

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    #5 driveitdaily, Aug 8, 2015

    When i did mine clockwise released the belt tension ( backed the pulley down ) and counterclockwise applied the tension


    1994 ferrari 348 spider , third owner purchased may 2013 w/ 27804 miles
     
  6. 2NA

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    #6 2NA, Aug 8, 2015
    GT Car Parts will hook you up.
     
  7. Wade

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    #7 Wade, Aug 8, 2015
    Last edited by a moderator: Sep 7, 2017
  8. johnk...

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    #8 johnk..., Aug 8, 2015
  9. SoCal1

    SoCal1 F1 Veteran
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    #9 SoCal1, Aug 8, 2015
    Last edited by a moderator: Sep 7, 2017
    You beast !!!

    Sorry to here

    You need to really loosen the not in the center of the pulley quit a bit
    They do lock up a little with corrosion. Right tightly lefty loosey is backwards on that.
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  10. Eric C

    Eric C F1 World Champ
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    #10 Eric C, Aug 8, 2015
    Thanks fellas. I found one on ebay for $49 shipped.

    Anyone know the procedure for removing it?
     
  11. 2NA

    2NA F1 World Champ
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    #11 2NA, Aug 8, 2015
    Remove nuts and washers.
     
  12. Eric C

    Eric C F1 World Champ
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    #12 Eric C, Aug 8, 2015
    Ha! That easy huh?
     
  13. AceMaster

    AceMaster Three Time F1 World Champ

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    #13 AceMaster, Aug 9, 2015
  14. cf355

    cf355 F1 Rookie

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    #14 cf355, Aug 9, 2015
    Another option is to weld it.
     
  15. cf355

    cf355 F1 Rookie

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    #15 cf355, Aug 9, 2015
    back out the 3 studs to remove it.
     
  16. ///Mike

    ///Mike F1 Veteran

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    #16 ///Mike, Aug 9, 2015
    Be sure and save the old one, or offer it up here. That's an easy fix for a competent welder so no reason to toss the old part.
     
  17. yelcab

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    #17 yelcab, Aug 9, 2015
    `competent TIG welder. It is all aluminum.
     
  18. Eric C

    Eric C F1 World Champ
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    #18 Eric C, Aug 9, 2015
    Uh yeah, I just removed the nuts and realized the studs need to be removed. Is there a right way to do this?
     
  19. jssans

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    #19 jssans, Aug 9, 2015
    Totally sucks to do with the gas tank not removed. I removed the studs & destroyed the threads while removing them. I bought new studs & used double nut method to put them back in. https://www.youtube.com/watch?v=8qYKMtb3Jpo
    Maybe the double nut method could work for taking them out. Just so little room to work with.
     
  20. Loser

    Loser Formula Junior

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    #20 Loser, Aug 9, 2015
  21. taz355

    taz355 F1 Veteran
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    #21 taz355, Aug 9, 2015
    The tensioner is revers to what you think i think you were tightening it and it broke as said above. When i changed mine i did the same thing but realized my mistake befoe that happened. Thats too bad.
     
  22. jssans

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    #22 jssans, Aug 9, 2015
    I would replace the bearing while it's out too.
     
  23. Eric C

    Eric C F1 World Champ
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    #23 Eric C, Aug 9, 2015
    Yeah, that top one was a sob. How did you remove your studs? I don't even think I could get vise grips on that top one.
     
  24. Eric C

    Eric C F1 World Champ
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    #24 Eric C, Aug 9, 2015
  25. plugzit

    plugzit F1 Veteran
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    #25 plugzit, Aug 9, 2015
    If you remove the pulley you may be able to get it out without removing studs
    I've been lucky enough to do it that way
     
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